Heating furnace energy-saving system based on supercritical carbon dioxide and operation method

Abstract

The invention discloses a heating furnace energy-saving system based on supercritical carbon dioxide and an operation method. In the heating furnace energy-saving system, a compression system, a turbine system and a power generation system are in shaft connection; the compression system is connected in series with a heat assembly and a heating furnace water beam cooling pipeline assembly; the heat assembly comprises a regenerative system and a heat exchange system which are connected in parallel, and the heat exchange system is connected with the tail of a heating furnace; and an outlet of the heating furnace water beam cooling pipeline assembly is connected with an inlet of the turbine system, an outlet of the turbine system is connected with a second inlet of the regenerative system, a second outlet of the regenerative system is connected with a pre-cooling system, and the pre-cooling system is connected with a compressor. According to the heating furnace energy-saving system, supercritical carbon dioxide can be used for cooling heating furnace water beams, meanwhile, flue gas waste heat at the tail of the heating furnace is absorbed for heating, meanwhile, a turbine is driven to act to drive a generator to generate power, and the problems that in an existing iron and steel enterprise, the energy utilization rate of a heating furnace process is poor, and the waste heat recovery efficiency is not high are solved.

Description

technical field [0001] The invention relates to the technical field of energy utilization, in particular to an energy-saving system and operation method for a heating furnace based on supercritical carbon dioxide. Background technique [0002] Energy is the foundation of human survival and economic development, and the world's energy demand continues to grow with economic development. With the rapid development of the economy, the demand for energy is increasing year by year, and waste heat sources generally exist in today's industrial fields. Among them, iron and steel metallurgical enterprises are large energy consumers, their energy utilization rate is low, and the waste heat released by each production process is huge. The low efficiency of energy utilization leads to a series of secondary problems such as environmental pollution in iron and steel enterprises. Therefore, improving the energy utilization efficiency of iron and steel enterprises is one of the important m...

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Problems solved by technology

[0004] Based on the above problems, the object of the present invention is to provide a heating furnace energy-saving system and operating method based on supercritical carbon dioxide, to overcome the heating furnace process in existing iron and steel enterprises Poor energy utilization and low efficiency of waste heat recovery

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